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// Thanks: https://github.com/przemyslawpluta/node-youtube-dl/blob/master/lib/downloader.js
// We rewrote it to avoid sync calls
import { AbstractScheduler } from './abstract-scheduler'
import { SCHEDULER_INTERVALS_MS } from '../../initializers'
import { logger } from '../../helpers/logger'
import * as request from 'request'
import { createWriteStream, writeFile } from 'fs'
import { join } from 'path'
import { mkdirpPromise, root } from '../../helpers/core-utils'
export class YoutubeDlUpdateScheduler extends AbstractScheduler {
private static instance: AbstractScheduler
protected schedulerIntervalMs = SCHEDULER_INTERVALS_MS.youtubeDLUpdate
private constructor () {
super()
}
async execute () {
logger.info('Updating youtubeDL binary.')
const binDirectory = join(root(), 'node_modules', 'youtube-dl', 'bin')
const bin = join(binDirectory, 'youtube-dl')
const detailsPath = join(binDirectory, 'details')
const url = 'https://yt-dl.org/downloads/latest/youtube-dl'
await mkdirpPromise(binDirectory)
return new Promise(res => {
request.get(url, { followRedirect: false }, (err, result) => {
if (err) {
logger.error('Cannot update youtube-dl.', { err })
return res()
}
if (result.statusCode !== 302) {
logger.error('youtube-dl update error: did not get redirect for the latest version link. Status %d', result.statusCode)
return res()
}
const url = result.headers.location
const downloadFile = request.get(url)
const newVersion = /yt-dl\.org\/downloads\/(\d{4}\.\d\d\.\d\d(\.\d)?)\/youtube-dl/.exec(url)[ 1 ]
downloadFile.on('response', result => {
if (result.statusCode !== 200) {
logger.error('Cannot update youtube-dl: new version response is not 200, it\'s %d.', result.statusCode)
return res()
}
downloadFile.pipe(createWriteStream(bin, { mode: 493 }))
})
downloadFile.on('error', err => {
logger.error('youtube-dl update error.', { err })
return res()
})
downloadFile.on('end', () => {
const details = JSON.stringify({ version: newVersion, path: bin, exec: 'youtube-dl' })
writeFile(detailsPath, details, { encoding: 'utf8' }, err => {
if (err) {
logger.error('youtube-dl update error: cannot write details.', { err })
return res()
}
logger.info('youtube-dl updated to version %s.', newVersion)
return res()
})
})
})
})
}
static get Instance () {
return this.instance || (this.instance = new this())
}
}
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